Lenovo Yoga Ultrabook SSD Tweaks
My Lenovo Yoga 2 Pro 13 is a wonderful machine and I want to take care of the solid state device a.k.a. “hard-drive”. Basically I want to reduce unnecessary writes, for example by configuring the tmp dir to reside in memory.
System used: Grub | Linux | GNU | Debian | Ubuntu
Ignore Access Time
noatime flag to tell the OS not to update the journal access time for
files or directories.
# file system mp type options dump pass UUID=2b386f58-4a / ext4 errors=remount-ro,noatime 0 1
Things that do a lot of writes but can be thrown away at shutdown are good candidates for memory disks.
House temporary files in memory so we don’t waste writes to the SSD.
# fsys mount point type options dump pass tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0 tmpfs /var/spool tmpfs defaults,noatime,mode=1777 0 0
Also browser cache can go in memory since its a heavy writer. I just did Chromium since that’s mainly what I use. All I do is just create a link.
mkdir -p /tmp/stav/cache/chromium rm -rf ~/.cache/chromium ln -s /tmp/stav/cache/chromium ~/.cache/chromium
for user in stav; do DIR=/tmp/$user/cache/chromium sudo -u $user -- sh -c "mkdir -p $DIR && chmod -R 700 /tmp/$user" done
Make sure we are using
deadline, not cfq.
noop [deadline] cfq
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash elevator=deadline"
Then update Grub:
# Sharply reduce swap inclination vm.swappiness=0 # Improve cache management vm.vfs_cache_pressure=50
Ubuntu already comes with a weekly cron job to trim discarded blocks:
/etc/cron.weekly/fstrim. It is not advised to use “discard” in fstab because
it can result in performance issues when deleting a large number of small files.
Reserve 10% SSD unallocated for over-provisioning
Do NOT enable hibernation
Windows: Dual boot? De-fragmentation will kill your SSD because of the many write actions that it causes.